Apparently X-Debbugs-CC doesn't add up, so the ports lists didn't get a notification yet ...
Please see #845159 [i| | ] [src:gcc-7] gcc-7: gnat fails to build on kfreebsd-* #861734 [i| | ] [src:gcc-7] gcc-7 fails to build gnattools on armel #861735 [i| | ] [src:gcc-7] gcc-7 fails to build gnat on the Hurd #861737 [i| | ] [src:gcc-7] gcc-7 fails to build gnat on KFreeBSD